You can join a conversation by using:
<begin-conversation join="true" />
With that said, Seam must know about the conversation to join it. This means that you must ensure that the same natural conversation ID is provided on each request to the page in order to join the conversation.
Hope that helps.
yes, but in this way if I've accessed another conversation with another id before, I will join it. I've discovered it with the SEAM debug page
I would to obtain concurrent conversations
How can I do?